[TVM > Instructions] Migrate from `tvm-spec` to `tvm-specification`

[novusnota]

• Currently used: https://github.com/ton-org/tvm-spec
• Proposed: https://github.com/ton-blockchain/tvm-specification

When migrating, consider converting between the specs to keep the same API in the instructions table.

• Also migrate the workflow: .github/workflows/instructions.yml